646 A Sixth Memoir on the Law of Storms in India. [No. 127. 



28th October — Lat. 19° 52' long. 118° 2' E., strong gale N. N. E. to 

 N. N. W. with drizzling rain and a high sea. 



29th October.— laX. 19° 50' N. long. 118° 51' E., severe gale N. W. 

 with rain. 



30th October.— Lat. 20° 9' N., long. 118° 59' E., gale increasing in 

 violent gusts to a tyfoon, and shifting round from N. N. W. to South 

 Westward, and S. E., with thick weather and a high confused sea. 



SUt October.— Lat. 20° 21' N. long. 118° 29' E., gale moderating 

 from N. E. The thick weather prevented any observation for five 

 days. The wind shifted during the height of the tyfoon, the duration 

 of which did not exceed twelve hours. 



This single document, is the only one I have relative to this storm, 

 still, with the assistance of the ship's positions, as the centre evidently 

 passed over, or close to her, it enables us to ascertain its track on that 

 day at least, the 30th, with tolerable certainty, to have been from the 

 E. by S. to the W. by N. coming in, as it undoubtedly did, from the 

 Pacific Ocean. How much of the N. E. gale of the preceding days 

 was part of the tyfoon, and how much the setting in of the N. E. 

 monsoon, we cannot in the absence of any Barometrical observations 

 pronounce. With the N. E. monsoon, the Barometer would have pro- 

 bably risen, while with the storm it would have sunk. It does not 

 seem to have been of excessive violence. 



I have marked its track, as shewn by the shift, to the E. by N., and 

 crossing the ship's position at noon on the 30th. 



TRACK No. IX. — Lord Castlereagh's Tyfoon. 



From the Calcutta Journal of February, 1821. 



The following brief though distinct notice of a small tyfoon, (for 

 from its violence and change it certainly was entitled to be called 

 one,) is remarkable and useful, as shewing in how low a latitude 

 these may be encountered in the N. E. monsoon. I have not met 

 with any farther notice of it, and mark its track as an East and West 

 one, from the change stated in the account. The longitude of the 

 ship is not given, but it is not of consequence, for in that latitude 

 owing to the shoals and the coast of Cochin China, ships are mostly 



